Originally Posted by Professor Chaos:
Originally Posted by gunrunnerjohn:
You need a filter capacitor as well as the rectifier, start with a 220uf/35V one. Also, if you're supplying it with 12VAC to the bridge, I'd use a plain diode as you'll be providing significantly more than 12 volts DC to the relay with a bridge and a capacitor. If you're powering this from the track voltage and you have DCS, you'll also want a 22uh choke in series with the power to prevent DCS signal degradation.
John, with a large filter, what's the difference between full- and half-wave rectification?
Depends on the current draw of the relay.